Marcus is selling lemonade and peanuts. each cup of lemonade costs 0.75¢,and each bag of peanuts costs 0.35¢.on saturday, marcus sold 5 more cups of lemonade than bags of peanuts. he earned $7.05.how many cups of lemonade did marcus sell on saturday?

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297